532901domain: NAppears in sequencesa(n) = (n^2+1)^2+1.at n=27A178390Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) - 1, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=24A293767